第十八节 单线程单线程非堵塞长链接

Posted 2021-03-03 kogmaw

import socket

"""
短链接：传输三个数据，传一个进行一次三次握手四次挥手，再传输一个，再建立一个三次握手四次挥手......
长链接：只建立一次链接，传三个数据
"""

def tcp_serve(resp_socket):
    resp_body = ‘hahaha‘
    resp_header = ‘HTTP/1.1 200 OK
‘ + ‘Content-Length:%d
‘ % len(resp_body) + "
" + "
" 
    # ‘Content-Length,这个参数可以告诉浏览器此次传输的数据有多长，以便浏览器判断此次数据是否接受完成
    resp_data = resp_header + resp_body
    resp_socket.send(resp_data.encode(‘utf-8‘))

def main():

    web_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    web_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    web_socket.bind((‘192.168.0.106‘,8080))
    web_socket.listen(128)
    web_socket.setblocking(False)
    client_socket_list = list()

    while True:    
        try:
            resp_socket, resp_addr = web_socket.accept()        
        except Exception as e:
            pass
        else:
            resp_socket.setblocking(False)
            client_socket_list.append(resp_socket)
            for client_socket in client_socket_list:
                try:
                    recv_data = client_socket.recv(1024)
                except Exception as e:
                    pass
                else:
                    if recv_data:
                        tcp_serve(client_socket)
                        print(recv_data)
                    else:
                        client_socket.close()
                        client_socket_list.remove(client_socket)
    web_socket.close()

if __name__ == ‘__main__‘:
    main()